You have to set this parameter or the program will never run. Just set this to something very high to ensure the program never runs again. I agree this is VERY confusing and took me forever to understand it. It also led to programs not running at first until I understood this.
I am not sure why this option exists entirely and it not something I have ever used personally. However, with that said I do support it. I will consider renaming it like you suggested, thanks!